Document UT-MT-0778_EN
Page 29 of 39
Edition 11/03/2014
Supersedes edition 02/03/2014
LED INSET THRESHOLD/END LIGHT L
THE04
INSTRUCTION MANUAL FOR USE, INSTALLATION AND MAINTENANCE
Figure 16 - Lower Cover Fixing Screws
3.6.4
Leakage test
The assembly should be given a 1.38 kPa air pressure test. This can be done by
connecting an external air pressure line to the valve (Figure 17– n°2) provided on the
lower cover. Immerge the assembly under water, so air loss will be easily viewed if
some part is damaged or assembling is wrong.
If there is no air loss then test is passed successfully.
Light unit is ready to be field installed.
Figure 17 - Lower Cover with Pressure Valve
3.6.5
Reinstalling the fixture
Every time the fixture is removed from the base
replace
the following items with a
new ones making sure that are right placed in the relevant groove:
the six special seal lock washers;
O-Ring around the dome (Figure 18 – n°4);
O-Ring between fixture and shallow base (Figure 18 – n°7);
The fixture is ready to be field installed.
